UM400a Manual - Lectrosonics.com
Contents
1. Transmitter is not set to same frequency as receiver Check that frequency select switches on receiver and transmitter match 4 Sound system or recorder input is turned down DISTORTED SOUND 1 Transmitter gain audio level is far too high Check mod level lamps on transmitter and receiver as it is being used Refer to Operating Instructions Adjusting Gain 2 Receiver output may be mismatched with the sound system or recorder input Adjust output level on receiver to the correct level for the recorder mixer or sound system 3 Excessive wind noise or breath pops Reposition microphone and or use a larger windscreen HISS AND NOISE AUDIBLE DROPOUTS 1 Transmitter gain audio level far too low 2 Receiver antenna missing or obstructed 3 Transmitter antenna missing or folded against housing 4 Operating range too great EXCESSIVE FEEDBACK 1 Transmitter gain audio level too high Check gain adjustment and or reduce receiver output level 2 Transmitter too close to speaker system 3 Mic is too far from user s mouth Rio Rancho NM 15 UM400a Specifications and Features Operating freguencies Freguency selection RF Power output Pilot tone Freguency stability Deviation Spurious radiation Eguivalent input noise Input level Input impedance Dynamic mic Electret lavaliere Line level Input compressor Gain control range Modulation indicators Low frequency roll off Audio frequenc2. an authorized dealer This warranty does not cover eguipment which has been abused or damaged by careless handling or shipping This warranty does not apply to used or demonstrator eguipment Should any defect develop Lectrosonics Inc will at our option repair or replace any defective parts without charge for either parts or labor If Lectrosonics Inc cannot correct the defect in your eguipment it will be replaced at no charge with a similar new item Lectrosonics Inc will pay for the cost of returning your eguipment to you This warranty applies only to items returned to Lectrosonics Inc or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liablility of Lectrosonics Inc and the entire remedy of the purchaser for any breach of warranty as outlined above NEITHER LECTROSONICS INC NOR ANYONE INVOLVED IN THE PRODUCTION OR DELIVERY OF THE EQUIPMENT SHALL BE LIABLE FOR ANY INDIRECT SPECIAL PUNITIVE CONSEOUENTIAL OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THIS EQUIPMENT EVEN IF LECTROSONICS INC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN NO EVENT SHALL THE LIABILITY OF LECTROSONICS INC EXCEED THE PURCHASE PRICE OF ANY DEFECTIVE EQUIPMENT This warranty gives you specific legal rights You may have additional legal rights which vary from state to state LECTRO
3. be used The trans mitter must be set to the operating mode of the match ing receiver which is done using the supplied screw see the large and small contact holes inside the battery compartment with the door open Insert the battery correctly and close the cover by press driver and a battery ing the door closed and across reversing the open ing procedure illustrated here If the battery is inserted NOTE The unit is supplied from the factory as a incorrectly the door will not close Do not force the door Digital Hybrid 400 series transmitter closed 1 Ensure the battery is good 2 Turn off the transmitter 3 With a small screwdriver one is included with your unit set the Freguency Select Switches to CC for Change Change 4 Power up the unit briefly just long enough for the LED s to light up and then turn it off 5 Change the Freguency Select Switches to one of the following settings To set Lectrosonics 100 Series mode set switches to 1 1 To set Lectrosonics 200 Series mode set switches to 2 2 To set Mode 3 set switches to 3 3 contact the factory for details To set Lectrosonics Hybrid mode set switches to 4 4 To set IFB mode set switches to 5 5 not available on earlier units To set Mode 6 set switches to 6 6 6 Turn the unit on wait a couple of seconds and turn it off again 7 Change the Freguency Select Switches to 0 0 8 Turn on the transmitter to complete the opera
4. for each individual transmitter If a situation exists whereby the antenna is defective and the antenna cap is missing refer to the following chart to determine the correct replacement antenna BLOCK FREQUENCY CAP ANTENNA RANGE COLOR WHIP LENGTH 470 20 st2000 sa7500 Black 4 21 537 600 563 100 Brown 474 22 500200 s80700 Red aw 26 665 500 691 100 Bue s 14 LECTROSONIGS INC Frequency Synthesized UHF Belt Pack Transmitter Troubleshooting Before going through the following chart be sure that you have a good battery in the transmitter It is important that you follow these steps in the sequence listed Symptom Possible Cause TRANSMITTER BATTERY LED OFF 1 Battery is inserted backwards 2 Battery is dead NO TRANSMITTER MODULATION LEDs 1 Gain control turned all the way down 2 Battery is in backwards Check power LED 3 Mic capsule is damaged or malfunctioning 4 Mic cable damaged or mis wired RECEIVER RF LAMP OFF 1 Transmitter not turned on 2 Transmitter battery is dead 3 Receiver antenna missing or improperly positioned 4 Transmitter and receiver not on same frequency Check switches display on transmitter and receiver 5 Operating range is too great 6 Transmitter antenna not connected NO SOUND OR LOW SOUND LEVEL 1 Receiver output level set too low RECEIVER INDICATES PROPER AUDIO 2 Receiver output is disconnected cable is defective MODULATION or mis wired 3
5. instance excessive low frequen The Modulation LEDs provide a visual indication of the cy content can cause excessive power amplifier drain or input audio signal level from the microphone These two even damage to loudspeaker systems bicolor LEDs can glow either red or green to indicate NA modulation levels Signal Level 20LED 10LED CG LIT ETT 0dB Less than 20 dB O Off O off mer X LIM CT JA TET Roll off 20 dB to 10 dB O Green O off 10 dB to 0 dB O Green O Green l RM 0 dB to 10 dB O Red O Green N ZEIT UNI NII Greater than 10 dB Red O Red TE TE II The side panel is marked to indicate the approximate hinge point of the roll off but is normally adjusted while listening to the audio In controlled situations such as a motion picture production set indoors where envi ronmental noise is minimal the control can be rotated The Modulation LEDs also indicate the Compatibility Mode when the transmitter power switch is turned on The LEDs will blink simultaneousiv to indicate the mode currently set e Once for 100 Series mode counter clockwise to permit low frequency audio to be e Two times for 200 Series mode captured e Three times for mode 3 a l Four times for Digital Hybrid Wireless also called s Belt Clip the 400 Series mode Location e Five times for IFB mode not available on very early units Six times for mode 6 Modes 3 and 6 provide compatibility with other manu facturer s
6. repair If the repair is more complicated than a broken wire or loose connection send the unit to the factory for repair and service Don t attempt to adjust any controls inside the units Once set at the factory the various controls and trimmers do not drift with age or vibration and never require readjustment There are no adjustments inside that will make a malfunctioning unit start working Lectrosonics Service Department is equipped and staffed to quickly repair your equipment In warranty repairs are made at no charge in accordance with the terms of the warranty Out of warranty repairs are charged at a modest flat rate plus parts and shipping Since it takes almost as much time and effort to determine what is wrong as it does to make the repair there is a charge for an exact quotation We will be happy to quote approximate charges by phone for out of warranty repairs Returning Units for Repair For timely service please follow the steps below A DO NOT return equipment to the factory for repair without first contacting us by email or by phone We need to know the nature of the problem the model number and the serial number of the equipment We also need a phone number where you can be reached 8 A M to 4 P M U S Mountain Standard Time B After receiving your request we will issue you a return authorization number R A This number will help speed your repair through our receiving and repair departments The return authorization n
7. F output circuit includes a one way circulator isolator using a magnetically polarized ferrite This device greatly reduces the RF intermodulation produced when multiple transmitters are used in close proximity to one another several feet apart The isolator also provides additional RF output stage protection UM400a Controls and Functions Input Jack Power LED Power ON OFF Switch AUDIO LEVEL Control Modulation LEDs ANTENNA Jack Input Jack The input on the UM400a accommodates virtually every lavaliere hand held or shotgun microphone available Different line level signals can also be accommodated See Wiring Hookups for Different Sources Power ON OFF Switch Turns the transmitter on and off Even when the switch is turned off or on abruptly the pilot tone muting system prevents thumps or transients from occurring Power On LED The Power LED glows green when the battery is good and the transmitter is turned on The LED will glow yellow orange as the battery voltage drops and finally glows red when there are about 30 minutes of operation left when using the recommended battery The LED blinks red when there are only a few minutes of life left Low Freguency Roll Off Control LE teas 100K Frequency Select Switches NOTE While a NiMH battery provides long operating time it will give little or no warning before it is depleted If you use a NiMH battery in the UM400a we recommend trying
8. INSTRUCTION MANUAL UM400a Freguency Synthesized 100 mW UHF Belt Pack Transmitter Featuring Digital Hybrid Wireless Technology U S Patent 7 225 235 Serial Number LECTROSONICS NAE Rio Rancho NM USA www lectrosonics com Purchase Date UM400a 2 LECTROSONICS INC Frequency Synthesized UHF Belt Pack Transmitter Table of Contents General Technical Description ilaele 4 IMtFOGUCHOM piera even a inte rela Cael es eed lita 4 Digital Hybrid Wireless Technology i 4 UM4 00a Block Diagrammi A PIETRE EE eee 4 No Pre Emphasis De Emphasis i iaia at iaia 5 Pilot TOMO EE 5 Input Eli 5 Wide Bajid Deviation eigene ee Ia TP EE TIN 5 Frequency Selection EEN 5 Controls and Functions iaia 6 ImpUt JAGK EE 6 Power ON OFF SWItch iii je f A Deeg 6 Power On LED i ST A acter ucts 6 Frequency Select Switches auamniu irta a a va A at rask Ep EP d EENS 6 Audio Level COMO oe i ree ja EEE da da ENEE 7 Modulation RTE 7 Antonia i a EEE FERMO PO IAA fa sin a a ki f CRAS E ORA ra AR A 7 Adjustable Low Frequency Roll Off HA Kaa HA MKAAAKEME ANKA MEMEZNZMMNNEEMNAMMNEKEMNEMMMEEMINEMMMNAMINEEEMNEEEZEEEEZE 7 Belt Clip xii ei i i a e L ae vine et AY LASTU el 7 Battery Installation rire 8 Operating INStrUOtiONS 6 sec cccaccieccsceneceecccnececdescececeesscceguecs seeszectencesdaccesnecsuesseaedcauedecareacceadeecsacscodtaancesneccccedseccsncdsa
9. IP o 3 4 RCA or 1 4 PLUG NOTE The resistor value can range from 3k to 4kohms TASF l CAor INN 4 5 PLUG For signal levels up to 3V 12 dBu before limiting Fully 5 PLUG compatible with 5 pin inputs on other Lectrosonics transmitters such as the LM and UM Series A 20k ohm resistor can be inserted in series with Pin 5 for an additional 20 dB of 2 VOLT NEGATIVE BIAS 2 WIRE ELECTRET 27k PIN attenuation to handle up to 30V 32 dBu O 1 SHIELD H a O 2 BALANCED AND FLOATING LINE LEVEL SIGNALS VERI i Og Compatible wiring for microphones o G PIN PIN such as negative bias TRAM models o 4 1 SHIELD 1 5 NOTE The resistor value can range from 2k to 4k ohms TASF 2 o 2 PLUG 3 o 3 4 VOLT POSITIVE BIAS 3 WIRE ELECTRET XLR JACK NOTE If the output is balanced but center is TASF WITH EXTERNAL RESISTOR tapped to ground such as on all Lectrosonics 5 PLUG receivers do not connect Pin 3 of the XLR jack SHIELD PIN to Pin 4 of the TASF connector O 1 O2 Used for 3 wire lavaliere LO Z MICROPHONE LEVEL SIGNALS microphones that require an 3 external resistor such as the 4 7 Sanken COS 11 o PIN PIN 5 SHIELD 1 1 This wiring is fully compatible with 5 pin inputs on Lectrosonics 2 o transmitters such as the LM and UM Series This is the wiring for the Lectrosonics M152 lavaliere microphone 3 3 XLR JACK For low impedance dynamic mics or electret 4 mics with internal battery or power supply or Simple Wiring for Servo Bias Inputs Only 2 VOLT P
10. OSITIVE BIAS 2 WIRE ELECTRET SHIELD PIN Simplified wiring for microphones such as Countryman B6 Lavalier 3 and E6 Earset models and others o 4 NOTE This servo bias wiring is not compatible with earlier TASF con l srt S R versions of Lectrosonics transmitters Check with the factory 05 PLUG NOTE TNS SON bies MEG Ismet oompatilia win aria to confirm which models can use this wiring 2 VOLT NEGATIVE BIAS 2 WIRE ELECTRET PIN SHIELD Simplified wiring for microphones such as negative bias TRAM NOTE This servo bias wiring is not compatible with earlier versions of Lectrosonics transmitters Check with the factory to confirm which models can use this wiring Rio Rancho NM 4 VOLT POSITIVE BIAS 3 WIRE ELECTRET SHIELD O So N versions of Lectrosonics transmitters Check with the factory to confirm which models can use this wiring 14 UM400a Replacement Parts and Accessories Item Model Part Number Replacement wire belt clip Lectrosonics BCWire Replacement whip antenna Lectrosonics AMM xx specify frequency block xx UHF Transmitter Antenna Specifications hi Length Note Check the scale of your printout This line should be 6 00 inches long 152 4 mm Lectrosonics AMM Series UHF transmitter antennas follow the color code specifications in the chart below to identify operating frequency block range The frequency block range is engraved on the outside housing
11. SONICS Nu 581 Laser Road NE Rio Rancho NM 87124 USA e www lectrosonics com 1 505 892 4501 e fax 1 505 892 6243 800 821 1121 US and Canada sales Olectrosonics com 20 NI N Las YUAN UM400aman indd 19 June 2015 LECTROSONIGS INC
12. a fully charged battery in the unit noting the length of time that it will run the unit and in the future use somewhat less than that time to determine when the battery needs to be replaced Digital Hybrid receivers include timers to accurate track battery usage A weak battery will sometimes light the Power LED to the good green indication immediately after being put in the unit but will quickly discharge to the point where the LED will go red or shut down just like a flashlight with dead batteries If the lamp fails to light the bat tery should be replaced Frequency Select Switches Two 16 position rotary switches adjust the center frequency of the carrier The left hand switch 1 6 MHz steps and the right hand switch makes 100K steps LECTROSONIGS INC Frequency Synthesized UHF Belt Pack Transmitter Audio Level Control Adjustable Low Frequency Roll Off The front panel AUDIO LEVEL Control is used to adjust The low frequency roll off control is used to remove the input level gain for optimal modulation The con subsonic or very low frequency audio often produced trols provides continuously variable gain over a 43 dB by air conditioning systems automobile traffic and other range for precise adjustment sources Excessive low frequency content in the audio input can cause a variety of audio problems including Modulation LEDs driving the transmitter into limiting In sound reinforce l l l MA ment svstems as one
13. ansmitters it may be necessary to install a chip capacitor in the mic capsule or connector to block the If more headroom is needed insert a 20 k resistor in series with pin 5 Put this resistor inside the TA5F con nector to minimize noise pickup RF from entering the electret capsule SHELDON ine Level 02 4 2 9 Some mics require RF protection to keep the radio Norral Hookup og Woo signal from affecting the capsule even though the AUDIO gt Jet transmitter input circuitry is already RF bypassed see schematic diagram If the mic is wired as directed and you are having dif stero END FIN ficultv with squealing high noise or poor frequencv Line Level 02 0 99 response RF entering the capsule mav be the cause REH E o lt 8 The best RF protection is accomplished by installing RF 5 FLUG bypass capacitors at the mic capsule If this is not pos sible or if you are still having problems capacitors can be installed on the mic pins inside the TA5F connector housing 2 WIRE MIC 3 WIRE MIC Preferred locations for bypass capacitors SHIELD CAPSULE _ CAPSULE TA5F CONNECTOR Alternate locations for bypass capacitors TASF CONNECTOR Install the capacitors as follows Use 330 pF capaci tors Capacitors are available from Lectrosonics Please specifv the part number for the desired lead style Leaded capacitors P N 15117 Leadless capacitors P N SCC330P NOTE All Lectrosonics lavalie
14. ation See chart Adjusting the Transmitter Frequency If you are experiencing interference from another signal on your frequency you will need to change the operat ing frequency of your system If you are using a receiver with a frequency scan func tion find a clear frequency with the receiver then set the transmitter to match Note Leave the transmitter turned off while you search for a clear frequency The left switch changes the operating frequency by 1 6 MHz per step and the right switch changes it 100 kHz per step Start by changing the operating frequency in 100 kHz increments to find a clear channel If it is not possible to find a clear channel using the 100 kHz switch return it to its original position and change the 1 6 MHz switch by one click then try the 100 kHz switch again below To gain access to these switches slide the access door Signal Level 20 LED 10 LED sideways with a fingernail With Lectrosonics Digital Hybrid receivers a front panel than 20 dB ff ff Preti dg 4 3 21 Oe DO LCD character display will indicate the correct transmit 20 dB to 10 dB O Green O Off ter switch settings 10 dB to 0 dB Green O Green 0 dB to 10 dB O Red Green optimum Greater than 10dB ORed Red 7 Once the gain has been adjusted the audio system audio can be turned on to make level adjustments in the main audio system NOTE The transmitter Audio Level Control shoul
15. c Cord Stripping Instructions O VIEW FROM SOLDER SIDE OF PINS 0 15 gt k o 3 gt Crimping to Shield and Insulation O ES Er Strip and position the cable so that the clamp can be crimped to contact both the mic cable shield and the insulation The shield contact reduces noise with some microphones and the insulation clamp increases ruggedness Insulation Shield Crimp these Crimp these fingers to fingers to N contact the clamp the NOTE This termination is intended for UHF shield insulation transmitters only VHF transmitters with 5 pin jacks require a different termination Lectrosonics lavaliere microphones are terminated for compatibility with VHF and UHF transmitters which is different than what is shown here Rio Rancho NM 14 UM400a Microphone RF Bypassing Line Level Signals When used on a wireless transmitter the microphone The normal hookup for line level signals is Signal Hot element is in the proximity of the RF coming from the to pin 5 Signal Gnd to pin 1 and pin 4 jumped to pin 1 transmitter The nature of electret microphones makes This allows signal levels up to 3V RMS to be applied them sensitive to RF which can cause problems with without limiting microphone transmitter compatibility If the electret microphone is not designed properly for use with wire less tr
16. d not be used to control the volume of your sound system or recorder levels This gain adjustment matches the transmitter gain with the user s voice level and microphone positioning Adjust the receiver output level to match the sound system or recorder Operating Notes If the audio level is too high both LEDs will blink red frequently or glow a steady red This condition may reduce the dynamic range of the audio signal If the audio level is too low neither LED will glow or only the 20 LED will glow green This condition may cause hiss and noise in the audio Different voices will usually require different settings of the AUDIO LEVEL control so check this adjustment as each new person uses the system If several different people will be using the transmitter and there is not time to make the adjustment for each individual adjust it for the loudest voice Rio Rancho NM UM400a 5 Pin Input Jack Wiring The wiring diagrams included in this section represent the basic wiring necessary for the most common types of microphones and other audio inputs Some micro phones may reguire extra jumpers or a slight variation on the diagrams shown It is virtually impossible to keep completely up to date on changes that other manufacturers make to their products thus you may encounter a microphone that differs from these instructions If this occurs please call our toll free number listed under Service and Repair in this
17. dio in the transmitter and decoding it in the receiver yet still sending the encoded informa UM400a Block Diagram Bias Voltage OV 2V or AN 4 5v Servo Bias Supply A D Converter gu 11001001 Audio tion via an analog FM wireless link This proprietarv algorithm is not a digital implementation of an analog compandor but a technique that can be accomplished only in the digital domain even though the inputs and outputs are analog Channel noise still impacts received signal qualitv and will eventually overwhelm a receiver Digital Hybrid Wireless simply encodes the signal to use a noisy channel as efficiently and robustly as possible yield ing audio performance that rivals that of wholly digital Systems without the power and bandwidth problems inherent in digital transmission Because it uses an analog FM link Digital Hybrid Wire less enjoys all the benefits of conventional FM wire less systems such as excellent range efficient use of RF spectrum and resistance to interference However unlike conventional FM systems it does away with the analog compandor and its artifacts No Pre Emphasis De Emphasis The Digital Hybrid Wireless design results in a signal to noise ratio high enough to preclude the need for conven tional pre emphasis HF boost in the transmitter and de emphasis HF roll off in the receiver This eliminates the potential for extreme distortion on signals wit
18. essing the transmit ters can also operate in various compatibility modes for use with Lectrosonics 200 Series Lectrosonics 100 Series IFB and certain non Lectrosonics receivers Contact the Lectrosonics sales department for a com plete list of compatible non Lectrosonics receivers Rio Rancho NM Wide Band Deviation 75 kHz deviation improves the signal to noise ratio and audio dynamic range of a wireless system dramatically compared to other designs that use 30 kHz to 40 kHz deviation Wide deviation combined with a high powered transmitters makes a significant improvement in signal to noise ratio and operating range Battery Options and Operating Time Switching power supplies convert regulated battery voltages to operate various circuit stages with maxi mum efficiency With the variety of alkaline lithium and rechargeable batteries available today in the 9V format there are many choices to maximize operating time or minimize cost as needed for any application Frequency Blocks Lectrosonics established a block numbering system years ago to organize the range of frequencies avail able from the low 500 MHz band to the upper 700 MHz band Each block includes 256 frequencies in 100 kHz increments The block number is part of a simple formula to derive the frequency The block number is multiplied by 25 6 to produce the lowest frequency in the block For example block 27 x 25 6 691 200 Girculator Isolator The R
19. h abundant high frequency information Encoded Audio Pilot Tone D A Converter GE 11001001 3 3v titer B Digital Signal Processor Switching a 9V Power L 1 8v N Batterv Supply gt Q 5v 3v S 4 d m l p a Microprocessor EN Bicolor Power Modulation LED LEDs Freq Switches Phase Locked Loop 4MHz gt Reference Voltage Controlled Oscillator Final Amplifier LECTROSONICS INC Frequency Synthesized UHF Belt Pack Transmitter Low Frequency Roll 0ff The low frequency roll off at the 3 dB down point is vari able from 35 to 150 Hz Hz to control subsonic and very low frequency audio content in the audio The actual roll off frequency will vary slightly depending upon the low frequency response of the microphone Excessive low frequency content can drive the transmit ter into limiting or in the case of high level sound sys tems can even cause damage to loudspeaker systems The roll off is normally adjusted by ear while listening as the system is operating Input Limiter A DSP controlled analog audio limiter is employed before the analog to digital A D converter The limiter has a range of more than 30 dB for excellent overload protection A dual release envelope makes the limiter acoustically transparent while maintaining low di
20. manual or visit our web site at www lectrosonics com Audio Input Jack UM400a VA gt OFF 2 AUDIO a LEVEL e 10 G ANTENNA TO The Audio Input Jack for the UM400a is wired as shown below PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 Shield ground for positive biased electret lava liere microphones Shield ground for dynamic microphones and line level inputs Bias voltage source for positive biased electret lavaliere microphones Low impedance microphone level input for dynamic microphones Also accepts hand held electret microphones provided the microphone has its own built in battery Bias voltage selector for Pin 3 Pin 3 voltage 0 2 or 4 volts depends on Pin 4 connection Pin 4 tied to Pin 1 OV Pin 4 Open 2V Pin 4 to Pin 2 4V High impedance line level input for tape decks mixer outputs musical instruments etc 5 VDC Servo Bias Pin 4 to Pin 1 0V N GND in 4 Open 2V Pin 4 to Pin2 4V BIAS om s WON MIC 30uF Lo 200 Ohim He 100 Ohm To Virtual Ground lt BIAS SELECT Audio Amplifier LINE IN To Limiter Control d 3 3uF 10k x M D P a x E SM Equivalent Input Circuit Wiring LECTROSONIGS INC Frequency Synthesized UHF Belt Pack Transmitter Microphone Cable Termination for Non Lectrosonics Microphones TA5F Connector Assembly coll ER DE Bin E Mi
21. ntaescescoutsstensuarestevectteaders 8 Selecting the Compatibility MOdEe i 8 Attaching a Microphone and Adjusting Gan 9 Operating INot s nd e A a e en p Adjusting the Transmitter Frequencv 5 Pin Input Jack Wiring sissccscsssactdccasstcdsntacanncdainisseennessaancndscsdsnandaeddsannsaasiataceantendeaceavasecatansuedsnsiaasseccasastasadhiusssadaiuvaniaiaranudsdniisiieutavainedeia Microphone Cable Terminationfor Non Lectrosonics Microphones rrsvrnravnnnvnnnnvnnnnnnnnvnnnnnnnnvnnnnnnnnnnnnnnnnnvnnnnvnnnnnnnnnnnnnnnnnnnnnnnnennnnn 11 TASF Gonnector Assembly e ia in ha a a Ea a Ea AREA LOSANNA eee epr I ligne 11 Mic Cord Stripping Instructions mus i a a 11 Crimping to Shield and Insulation eee a n aa nanna naa anna enaa Kaa naa naa nana aan Kaa Taa Kaan naan enaa a Kanaa carnatii ies 11 Microphone RF e EE e oss sssusa ivan dee ein ee leali aaa aa 12 Line Level Sonata 12 Wiring Hookups for Different SOUFCESI uiririniionispicanazininzinicazaniniaiannarizivnsnicna nici NAURA KONNA iniziai nziriri 13 Works With Servo INPputs OhilVz i sihardlo p g de pa e ape 13 Compatible with Servo Inputs and other Lectrosonics Transmitters i 13 Replacement Parts and ACCeSSOrieS mmrsrnnnsnvnnnnnnvnnnnnvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnvnnnnnnnnnnnnennnnnnennnnnnnnnnnennnnnnennnnnnennnnennnnnnnnnnnnennnnnvennnnnn 14 UHF Transmitter Antenna Specifications AE 14 le 101 l l e i l
22. p D 15 Specifications and Features 000 0 17 Service and Repair 000 ii 18 Returning Units Tor Rep alli de esere iaia ved tects ds eee 18 Copyright 2008 Lectrosonics Inc Rio Rancho NM a UM400a General Technical Description Introduction The UM400a transmitter combines 100 mW of RF output with 75 kHz wide deviation for extended operating range and extremely high signal to noise ratio These key design features are coupled with the compandor free Digital Hybrid Wireless audio chain and packaged in the widely recognized Lectrosonics standard transmitter housing The unit is powered by a single 9V battery in the inter nal compartment or from external DC using a Lectro sonics ISO9VOLT battery eliminator Digital Hybrid Wireless Technology All wireless links suffer from channel noise to some de gree and all wireless microphone systems seek to mini mize the impact of that noise on the desired signal Con ventional analog systems use compandors for enhanced signal to noise ratio at the cost of subtle artifacts known as pumping and breathing Wholly digital systems defeat the noise by sending the audio information in digital form at the cost of some combination of power band width and resistance to interference US Patent 7 225 135 Lectrosonics Digital Hybrid Wireless systems over come channel noise in a dramatically new way digitally encoding the au
23. re mics are already bypassed and do not need any additional capacitors installed for proper operation 18 LECTROSONIGS INC Frequency Synthesized UHF Belt Pack Transmitter Wiring Hookups for Different Sources In addition to the microphone and line level wiring hook ups illustrated below Lectrosonics makes a number of cables and adapters for other situations such as con necting musical instruments guitars bass guitars etc to the transmitter Visit www lectrosonics com and click on Accessories or download the master catalog A lot of information regarding microphone wiring is also available in the FAQ section of the web site at http www lectrosonics com faq htm Follow the instructions to search bv model number or other search options Compatible Wiring for Both Servo Bias Inputs and Earlier Transmitters 2 VOLT POSITIVE BIAS 2 WIRE ELECTRET 4 VOLT POSITIVE BIAS 2 WIRE ELECTRET PIN SHIELD 1 N SHIELD 1 15k e 9 F 2 AUDIO 3 3k 3 N 3 b ja o 4 Most common tvpe of wiring for lavaliere mics 4 Compatible wiring for microphones such ES o TA5F Fully compatible with 5 pin inputs on Lectrosonics o TA5F Countryman E6 headwom and B6 lavaliere 5 PLUG transmitters such as the LM and UM Series 5 PLUG DPA MICROPHONES Danish Pro Audio miniature models UNBALANCED LINE LEVEL SIGNALS PIN SLEEVE PIN SHIELD 1 SHIELD Ce This wiring is for DPA lavalier 2 CITA 0 o2 and headset microphones 3 T
24. receivers contact the factory for details Antenna The flexible steel cable antenna supplied with the transmitter is cut to 1 4 wavelength of the center of the frequency block the frequency range of the transmit ter The SMA connector is a 50 Ohm RF port which can Low Frequency also be connected directly to test equipment Replace Roll Off Control ment antennas are available in pre cut lengths for specific frequency blocks or as a kit with instructions to li cut the antenna for any frequency block Belt Clip The belt clip may be removed for special applications by removing one Screw WARNING Use ONLY the screw that is supplied The circuitry is tightly fitted into this unit A longer screw will permanently damage the transmitterl Rio Rancho NM Fa UM400a Battery Installation Operating Instructions To open the battery compartment press outward on the Selecting the Compatibility Mode cover door in the direction of the arrow as shown in the illustration Only firm sliding pressure is needed to open The UM400a can be used with Lectrosonics 400 Series and close the battery door Swing the door open and take Digital Hybrid 200 Series analog 100 Series analog note of the polarity marked inside showing the location of Lectrosonics IFB and some non Lectrosonics analog the positive and negative terminals You can also wireless receivers Contact the factory for details on the non Lectrosonics models that can
25. stortion It can be thought of as two limiters in series a fast attack and release limiter followed by a slow attack and release limiter The limiter recovers quickly from brief transients with no audible side effects and also recovers slowly from sustained high levels to keep audio distortion low and while preserving short term dynamics Signal Encoding and Pilot Tone In addition to controlling the limiter the DSP also en codes the digitized audio from the A D converter and adds an ultrasonic pilot tone to control the receiver s squelch A pilot tone squelch system provides a reliable method of keeping a receiver output muted squelched even in the presence of significant interference When the system is operating in the hybrid mode a differ ent pilot tone frequency is generated for each carrier frequency to prevent inadvertent squelch problems and simplify multi channel coordination Microprocessor PLL and VCO Circuits A microprocessor monitors user command inputs from the control panel buttons and numerous other internal signals It works intimately with the DSP to ensure the audio is encoded according to the selected Compatibil ity Mode and that the correct pilot tone is added to the encoded signal Compatibility Modes Digital Hybrid transmitters were designed to operate with Lectrosonics Digital Hybrid receivers and will yield the best performance when doing so However due to the flexibility of digital signal proc
26. tion The LEDS will blink to indicate the selected com patibility mode Immediately after power up all LEDS will blink together red then green followed by the audio level LEDs 20 and 10 blinking to indicate the mode The 20 and 10 LEDs will blink e Once for 100 Series mode e Two times for 200 Series mode e Three times for Mode 3 e Four times for Hybrid mode e Five times for IFB mode if available e Six times for Mode 6 At powerup the transmitter will confirm the current compatibility mode with the number of blinks listed here This setting will remain the same until you reset it with the procedure listed above 8 LECTROSONIGS INC Frequency Synthesized UHF Belt Pack Transmitter Attaching a Microphone and Adjusting Gain 1 Ensurethe battery is in good condition 2 Insert the microphone plug into the input jack align ing the pins be sure that the connector locks 3 Attach the antenna to the SMA connector on the top of the transmitter 4 Mute the associated receiver s audio output 5 Turn on the transmitter 6 Position the microphone in the location you will use in actual operation While speaking or singing at the same voice level that will actually be used observe the Modulation LEDs Adjust the AUDIO LEVEL control until the 20 dB LED glows green with oc casional red flickers and 10 dB glows green This will set the gain of your transmitter for signal peaks between 0 dB and 10 dB modul
27. umber must be clearly shown on the outside of the shipping container C Pack the equipment carefully and ship to us shipping costs prepaid If necessary we can provide you with the proper packing materials UPS is usually the best way to ship the units Heavy units should be double boxed for safe transport D We also strongly recommend that you insure the equipment since we cannot be responsible for loss of or dam age to equipment that you ship Of course we insure the equipment when we ship it back to you Lectrosonics USA Mailing address Lectrosonics Inc PO Box 15900 Rio Rancho NM 87174 USA Web www lectrosonics com Lectrosonics Canada Mailing Address 720 Spadina Avenue Suite 600 Toronto Ontario M5S 2T9 Rio Rancho NM Shipping address Lectrosonics Inc 581 Laser Rd Rio Rancho N 87124 USA E mail sales lectrosonics com Telephone 416 596 2202 877 753 2876 Toll free 877 7LECTRO 416 596 6648 Fax Telephone 505 892 4501 800 821 1121 Toll free 505 892 6243 Fax E mail Sales colinb O lectrosonics com Service joeb O lectrosonics com 12 UM400a 18 LECTROSONICS INC Frequency Synthesized UHF Belt Pack Transmitter Rio Rancho NM TS UM400a F l Z i RW N W IN N LIMITED ONE YEAR WARRANTY The eguipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from
28. y response overall system Controls Audio Input Jack Antenna Power Consumption Battery Battery Life Operating Temperature Weight Dimensions Emission Designator 180KF3E Specifications subject to change without notice Block 470 470 100 495 600 Block 19 486 400 511 900 Block 20 512 000 537 500 Block 21 537 600 563 100 Block 22 563 200 588 700 Block 23 588 800 607 90 an 614 100 614 300 Block 24 614 400 639 900 Block 25 640 000 665 500 Block 26 665 600 691 100 Block 27 691 200 716 700 export only Block 28 716 800 742 300 export only Block 29 742 400 767 900 export only Block 944 944 100 951 900 256 frequencies in 100kHz steps 100 mW nominal 25 to 32 kHz frequency 5kHz deviation 0 002 75 kHz max 90 dB below carrier 120 dBV A weighted Nominal 2 mV to 300 mV before limiting Greater than 1V maximum with limiting 300 Ohms Input is virtual ground with servo adjusted constant current bias 2 7 k Ohms Dual envelope compressor gt 30 dB range 43 dB semi log rotary control Dual bicolor LEDs indicate modulatio of 20 10 0 10 dB referenced to full modulation 18 dB octave 35Hz to 150Hz 35 Hz to 20 kHz 1 dB The low frequency roll off is adjustable see graph 6 3 0dB Mic in 35 Hz 3 Roll off Line in Z 6 D Mic in 150 Hz Il Roll off 12 30 100 1kH
29. z 10k 20k 2 position OFF ON slide switch for noiseless turn on tum off operation Front panel knob adjusts audio gain Recessed control on side panel adjusts low freguency rolloff Rotary switches on side panel adjust transmitter freguency Switchcraft 5 pin locking TASF Detachable flexible wire supplied 50 Ohm port allows connection to test equipment 80mA Precision compartment auto adjusts to accept any known alkaline 9 Volt battery 5 hours alkaline 10 hours lithium 20 to 140 degrees F 6 3 ozs including battery 3 1 x 2 4 x 75 inches The FCC requires that the following statement be included in this manual This device complies with FCC radiation exposure limits as set forth for an uncontrolled environment This device should be installed and operated so that its antenna s are not co located or operating in conjunction with any other antenna or transmitter 16 LECTROSONIGS INC Frequency Synthesized UHF Belt Pack Transmitter Service and Repair If your system malfunctions you should attempt to correct or isolate the trouble before concluding that the equipment needs repair Make sure you have followed the setup procedure and operating instructions Check the interconnecting cables and then go through the Troubleshooting section in this manual We strongly recommend that you do not try to repair the equipment yourself and do not have the local repair shop at tempt anything other than the simplest
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